EP3007931B1 - Baffle plate element and transport container arrangement with such a baffle plate element - Google Patents

Description

FIELD OF THE INVENTION

The present invention generally relates to a baffle element and a transport container arrangement, in particular a tank container, with such a baffle element.

BACKGROUND OF THE INVENTION

Baffle elements serve to hinder or significantly reduce the surge of a liquid cargo in case of delays or accelerations during transport (road, rail, sea) in a partially filled transport containers. Such transport containers typically have a circular cylindrical, elliptical, box-shaped or even rectangular cross section and are closed at their ends with curved or flat bottoms. There are also tank cross sections which are clover-shaped or composed of several circle segments. Baffle elements enforce the container interior and cover usually in accordance with the relevant transport regulations from at least 70% of the relevant cross-section of the container interior. The baffle elements generally extend transversely to the longitudinal axis of the usually elongated transport containers.

Baffle elements can be designed, for example, as apertured disc elements. But there are also flat and arcuately rolled or curved over several bends crescent or sickle elements that fully enforce the container interior with free edges, which form the chord of the half-moon element. In order to reinforce these free edges round or tear-shaped pipe sections are known, which fully enforce the container interior along the free edge.

At the terminal ends of the free edges or the reinforcing tubes, where the baffles or pipes open into the container wall, high local stresses can occur, which are caused by pressure loads and / or surge loads. Local overstress in these critical areas can even cause damage to the container wall in the worst case. This strength problem occurs in particular in such baffle elements, in which the free edges are designed to be very stiff with or without additional reinforcement compared to the membrane-like container wall. Baffle arrangements are z. B. from the EP 2 058 245 A1 or the generic EP 2 412 647 A1 known.

Based on this, the object is to provide a baffle element or a transport container arrangement which at least partially eliminates the disadvantages of the available solutions. In particular, the object is also the connection end at which meets the baffle element with a free edge on the container wall to improve constructively so that local stresses in this area are minimized at the expected operating loads.

SUMMARY OF THE INVENTION

According to a first aspect, the present invention provides a surge element having a terminal end, the terminal end having a first terminal region for connection to a container wall, and an endmost edge connecting one end of a free baffle edge to the first terminal region, the relief edge having a first portion extending along the first terminal portion and forming therewith a rib portion, a second portion connecting the first portion to a free edge of the baffle member, and the relief edge smoothly extending between the first terminal portion and the free edge.

Smooth course here means that the edge course has no corners, steps or jumps and different curved or straight sections of the relief edge also - so smooth - merge into each other.

Further aspects and features of the present invention will become apparent from the dependent claims, the accompanying drawings and the following description of preferred embodiments of the invention.

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1

eine Querschnittsdarstellung eines Transportbehälters mit zwei erfindungsgemäßen einander gegenüberliegenden Schwallwandelementen, die jeweils an ihren Enden Anschlussenden aufweisen;

Fig. 2

eine Schnittdarstellung (Schnitt A-A aus Fig. 1) des Anschlussendes eines erfindungsgemäßen Schwallwandelements;

Fig. 3

eine perspektivische Darstellung eines Anschlussendes aus Fig. 1 (Detail B), welches über ein Dopplerblech mit einer Behälterwand verbunden ist;

Fig. 4

eine Ansicht des in Fig. 3 dargestellten Anschlussendes mit geometrischen Kenngrößen;

Fig. 5

ein einstückig ausgebildetes Anschlussende gemäß der vorliegenden Erfindung; und

Fig. 6

6A und 6B alternative Ausführungsbeispiele eines erfindungsgemäßen Schwallwandelements mit Anschlussende;

Embodiments of the invention will now be described by way of example and with reference to the accompanying drawings. It shows:

Fig. 1

a cross-sectional view of a transport container with two inventive opposing baffle elements, each having at their ends connecting ends;

Fig. 2

a sectional view (section AA off Fig. 1 ) of the terminal end of a baffle element according to the invention;

Fig. 3

a perspective view of a connection end Fig. 1 (Detail B), which is connected via a Dopplerblech with a container wall;

Fig. 4

a view of the in Fig. 3 illustrated terminal end with geometric characteristics;

Fig. 5

an integrally formed terminal end according to the present invention; and

Fig. 6

6A and 6B show alternative embodiments of a baffle element according to the invention with connection end;

DESCRIPTION OF EMBODIMENTS

In Fig. 1 an embodiment in accordance with the present invention is illustrated. Before a detailed description, general explanations of embodiments will follow.

In a baffle element according to the invention, according to a first aspect of the invention, a connection end is provided, which has a first connection region for connection to a container wall and, in the installed state, is firmly connected therewith, in particular welded. A relief edge connects one end of a free baffle edge, which penetrates the tank interior with built-in baffle element to the first connection area, which in turn is connected to the container wall - directly or via a Dopplerblech.

Here, a first portion of the end-of-travel edge defines a rib portion extending along the first port portion and a second portion connecting that first portion of the relief edge defining the rib portion to the free edge of the baffle member. The relief edge runs smoothly between the first connection area and the free edge. In other words, the first and second sections go smoothly-without corners-one over another, and the rib section follows the terminal region corresponding to the container contour, where it is connected to the container. Thus, the free edge does not hit directly on the container wall, but is passed over the discharge edge in a tongue-like rib passing on the container wall.

As a result, a rigid transition between the free edge and the container is avoided, which would experience high local stresses at loads of the baffle element by surge and / or compressive stresses of the container. Such voltage spikes are reduced by the rib itself. They are namely shifted in the less critical transition region between the free edge and relief edge and additionally reduced by the course of the flexible elastic rib section at the transition between baffle element and container wall and distributed along the rib course on the container.

On the one hand, this constructive approach reduces the stresses occurring between the container wall and the baffle element as a whole. At the same time possibly occurring voltage spikes are distributed - ie degraded - and in a region of the baffle element, which has only secondary importance for the function of the container shifted. Even with an overuse the baffle at the terminal end it comes at worst to overload the baffle itself, a critical load on the container wall itself is largely avoided.

In typical baffle arrangements, there are two opposing baffle elements which are placed in a strip or crescent shape in a (e.g., circular) container cross-section and whose facing free edges define a V-shaped passageway that passes approximately vertically through the vessel. The baffle ends or the connection ends of the free edges meet in the sole or in the apex region of the container on the container wall. The highest loads are experienced by the connecting ends in the sole area, in which a possible leakage would be particularly critical. The inventive design of the baffle elements thus significantly reduces the risk of leakage.

In one embodiment, the first section defining the rib section is connected to the second section via a concavely curved transition section. This transition section has a radius R, which is designed so that it allows a notch-free transition between the two sections.

In a further embodiment it is provided that the relief edge at the end of the rib portion has a convexly curved end portion with a second radius r, which is smaller than the first radius R. This reduced convex end radius allows a tension-favorable and sweat-like design of the fin end, namely in the Area where this end meets the container wall.

In this case, in a design between the first and second radius or between the first and second section, a straight connecting section can run. This one goes smoothly into the radii and prevents voltage jumps in the rib area.

In an embodiment in which this connection section encloses an angle α with the first connection region such that the rib section tapers from the transition section towards the end section, the stress conditions are further improved. The continuous and / or peak load capacity of both the baffle element itself and the connection zone of the container can be increased. Relative to the base point in the end region, an angle between 5 ° and 15 ° and in particular between 8 ° and 12 ° has proven to be useful.

In one embodiment, the relief edge jumps back in the transition section behind the course of the free edge. Thus, in the area where the relief edge rests farthest behind the (straight) course of the free edge, a zone of maximum flexibility of the Define baffle element in its terminal end, which further increases the fatigue strength in this area.

The above applies both to those baffle elements, in which the terminal end is integrally formed and formed as well as for those in which the terminal end is designed as a separate element, which is connected to the baffle, in particular welded.

In one embodiment, the terminal end is plate-shaped with a wall thickness t formed, which corresponds to one to two times the wall thickness of the baffle element itself. This not only improves the desired voltage distribution described above. In addition, the particularly highly stressed connection end can be additionally stabilized by the wall thickness increase, by e.g. can also be matched to the existing wall thickness of the container. Thus, wall thickness jumps between the container wall and the relatively thinner baffle element can be reduced in the critical region of the connection end.

The terminal end may be e.g. are also arranged overlapping with the baffle element, either as a patch plate or as the free edge of the baffle element encompassing shoe. Such a shoe then has, for example, at the end of the rib portion, a crease line at which the two flanks forming the shoe are folded together. The connection of the connection end or connection piece is then carried out via particularly easily executable fillet welds. Such an overlapping connector / terminal end is very tolerant of manufacturing, since the correct position can be achieved by moving along the baffle element.

In another embodiment, the connection end / connection piece is welded in a recess formed in the baffle element whose contour corresponds to a second connection region. This design is somewhat more complex in terms of manufacturing technology. The shape of the recess and the second connection area must be precisely matched and - in contrast to the patch plate - the connection is made via a full connection (I-seam). However, this embodiment is preferable in terms of its strength properties and in particular to be preferred in terms of their durability and resistance to change.

The invention also relates to a transport container arrangement, in particular a tank container with a container having in its interior one or more baffle elements according to one of the preceding claims.

These may be the crescent-shaped baffle elements discussed above, but they may also be strip-shaped baffle elements which transversely open the container Direction so vertically, horizontally or obliquely enforce and optionally also have two free edges (see Figure 7).

Often, with baffle elements which are welded to the container wall, a Doppler plate is provided between the container wall and the connection edge of the baffle element, which is intended to reduce the stresses in the container wall. These stresses are particularly high in the area of the connection ends - ie where the free edges meet the container wall - particularly high. Due to the inventive design of the terminal end in the manner indicated above, the use of these so-called Dopplerbleche can be limited to the area of the terminal ends themselves. Such a Doppler plate is then usually about 5 to 10 times the wall thickness of the terminal end or the connection area beyond the first terminal area, in all directions.

Returning to Fig. 1 This shows a cylindrical container 1 in cross-section in a view along the longitudinal axis of the container 1. The interior 2 passes through a pair of baffle elements 3, each covering a crescent shape a flank region of the interior 2. The baffle elements 3 are connected along their peripheral contour with the inside 5 of the container wall 6 of the container 1, in particular welded. Toward the middle of the container 1, the baffle elements 3 end with an approximately vertical free edge 7, which respectively pass through the interior 2 of the container 1. The container 1 is part of a transport container arrangement, which is designed, for example, as a tank container, vehicle tank or rail tanker.

The free edges 7 form an approximately vertically extending passage gap 8, which tapers trapezoidally from the upper container apex to the lower container bottom. In the flank region of the transport container 1, the baffle elements each have a compensation opening 9, which ensures that in the event of an accident, even with a lying on the side of container 1 a communicating connection between the baffles formed by the baffle elements 3 compartments.

The in Fig. 2 shown partial section AA shows that the baffle elements 3 are formed simply curved or multiple in this embodiment. The curvature executed here runs parallel to the free edges 7. The connection ends are formed here as separate connecting pieces 10 and serve to make a voltage-optimized transition between the free edges 7 and the container wall 6. The terms connecting end and connecting piece should be understood here synonymously.

The FIGS. 3 and 4 show such a connector or terminal end 10 in the foot region of the transport container 1. The connector 10 includes a first connection portion 11, which is formed as the container wall 6 following terminal edge. Along this connecting edge 11, the connecting piece 10 is connected to the inner side 5 of the container wall 6, in particular welded.

In the in Fig. 3 illustrated embodiment, an optional Doppler plate 12 is disposed between the first terminal portion 11 and the container wall 6, which is welded along its edge 13 with the container wall 6. The connecting piece 10 has a relief edge 14, which connects the free edge 7 with the first connection region 11.

The relief edge 14 has a first portion 15 which extends approximately along the first connection portion 11 and defines a rib portion 16 extending from a second portion 18 of the relief edge 14 and tapering towards its end 17 along the container wall 6 and the Dopplerblech 12 runs. The second section 18 connects the first section 11 with the free edge 7 of the baffle element 3.

In this case, the relief edge 14 runs smooth between the connection to the free edge 7 and the end 17 of the rib portion 16 and pierces the container wall 6 and the Doppler plate 12 approximately perpendicularly at its base 19. The connection end 10 is connected to the baffle element 3 via a second connection region 20. In the in Fig. 3 In the illustrated embodiment, the baffle element 3 has a recess corresponding to the second connection region 20.

The relief edge 14 has in the second section 18 has a concave radius R, which leads to the rib portion 16 smoothly into the first portion 15, which is formed of a straight connecting portion 22, which in turn leads to the end 17 in a small convex transition radius r and which opens via a straight end piece 23 in the container wall 6 and the Dopplerblech 12.

To the free edge 7 of the baffle element 3 forms a connection contour 24, starting from the radius R, the connection of the relief edge 14 to the baffle element 3. The radius R is designed so that the contour of the second portion 18 by the amount d behind the course of the straight free edge 7 springs back so that in the radius range R a defined Endastungsbogen is formed.

FIGS. 4A and 4B show an embodiment in which the baffle 3 is made flat, ie without curvature around the free edge 7 and are geometric dependencies for dimensioning of the connector 10 again. There are also embodiments in which the connecting piece 10, which is arranged on a curved baffle element 3 only partially follows the curvature, for example, up to the free edge 7 and beyond the edge 7 protruding areas (eg the rib portion 16) non-arched, so straight ,

In this case, the sizes according to the following table apply to exemplary embodiments: size minimum maximum comment D: container diameter 1750 mm 2600 mm Typical container diameter for transport containers s _v : wall thickness container Depending on the regulation Typically between 4 and 15 mm s _b : wall thickness baffle element 3 mm 8 mm T: wall thickness connection end 6 mm 16 mm Typically twice that of s _b r: convex radius at the end 17 10 mm 25 mm R: concave radius in the first connection area 11 30 mm 60 mm α: angle of inclination of the rib portion 16 to the container wall 5 ° 20 °

In particular, the following applies. The wall thickness t of the connecting piece 10 corresponds to one to two times the wall thickness s _b , which is usually between 3 mm and 8 mm. This relationship applies to wall thicknesses s _{v of} the container from 4 mm to about 15 mm and applies to container internal diameters between 1750 mm and 2600 mm.

The radius r is about 2.5 times the wall thickness t of the connector 10. The radius R is 1 to 6 times the radius r. The straight length 1 (straight connecting portion 22) of the rib portion 16 is about 5 to 10 times the thickness t of the fitting 10, and the recess d behind the course of the free edge 7 is about R / 2. The width W corresponds approximately to the length 1 of the rib area 16

Fig. 5 shows an embodiment in which the connection end 10 'is integrally formed on the baffle element 3. Such a connection end 10 'has everywhere the same wall thickness t as the wall thickness s _b as the baffle element 3auf and can straight (as in Fig. 5 shown) or arched (see. Fig. 3 and 2 ) be formed.

In the execution according to Fig. 6A is the connection end 10A designed as a U-shaped folded Doppler plate, which includes the baffle element 3 shoe-shaped.

The execution in Fig. 6B shows a connector 10 B, which is welded as a one-sided overlapping plate attached to the baffle element 3.

As an alternative to the transition shown here, in which a corner is formed between the relief edge 14 and the free edge 7, there are also embodiments in which a corresponding design of the free edge 7 on the baffle element 3 and the connector 10 A and 10 B, a smooth , rounded transition is formed (see dashed line in FIG FIGS. 6A and 6B ).

The present invention thus relates to a baffle element (3) having a connection end (10), which has a first connection region (11) for connection to a container wall (6) and a relief edge (14) which has an end of a free baffle wall edge (7) the first connecting portion (11) connects, wherein the discharge edge (14) has a first portion (15) extending along the first terminal portion (11) and forms with this a rib portion (16), a second portion (18), the first portion (15) to a free edge (7) of the baffle element (3) connects, and the discharge edge (14) smoothly between the first terminal portion (11) and the free edge (7). The invention further relates to a transport container arrangement, in particular tank container, with such a baffle element.

Other embodiments will be apparent to those skilled in the scope of the claims.

Claims (11)

1. A baffle plate element (3) having a connection end (10; 10'; 10A; 10B), which has a first connection region (11) for connection to a vessel wall (6) and a relief edge (14), which connects one end of a free baffle plate edge (7) to the first connection region (11),
   the relief edge (14) having a first portion (15) that extends along the first connection region (11) and forms a rib portion (16) therewith,
   a second portion (18), which connects the first portion (15) to the free edge (7) of the baffle plate element (3), characterized in that the relief edge (14) extends smoothly between the first connection region (11) and the free edge (7).
2. The baffle plate element (3) according to claim 1, in which the first portion (15) is connected to the second portion (18) via a concavely curved transition portion which has a first radius (R).
3. The baffle plate element (3) according to claim 1 or 2, in which, at the end of the first portion (15), the relief edge (14) has a convexly curved end portion (17) having a second radius (r), the first radius (R) being greater than the second radius (r).
4. The baffle plate element (3) according to claim 3, in which a straight connection portion (22) extends between the second portion (18) and the end portion (17).
5. The baffle plate element (3) according to claim 4, in which the straight connection portion (22) and the first connection region (11) enclose an angle (α), so that the ribbed portion (16) tapers from the transition portion towards the end portion (17), the angle (α) being between 5° and 20°, preferably between 8° and 12° and even more preferably 10°.
6. The baffle plate element (3) according to any of the preceding claims, in which the relief edge (14) in the transition portion is recessed with respect to the free edge (7) by an amount (d).
7. The baffle plate element (3) according to any of the preceding claims, in which the connection end (10; 10A; 10B) is formed in plate-shaped fashion with a wall thickness (t), which is one to two times a wall thickness (s_b) of the baffle plate element (3) and has a second connection region (20), which is connected to the baffle plate element (3).
8. The baffle plate element (3) according to claim 7, in which the connection end (10) is welded in a recess (21) formed in the baffle plate element (3), the contour of which recess corresponds to the second connection region (20).
9. The baffle plate element (3) according to claim 7, in which the connection end (10A) is formed as a U-shaped folded shoe which partially surrounds the free edge (7).
10. A transport vessel assembly, in particular tank container, having a vessel (1), which has in its interior (2) a baffle plate element (3) according to any of the preceding claims.
11. The transport vessel assembly according to claim 11, comprising baffle plate elements (3), in which the connection ends (10; 10'; 10A; 10B) with the first connection region (11) thereof are connected to the vessel wall (6) via a doubler sheet metal element (12), which partly projects into a connection region of the baffle plate element (3).

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